参数资料
型号: IDT72V845L15PFI
厂商: IDT, Integrated Device Technology Inc
文件页数: 3/26页
文件大小: 0K
描述: IC FIFO SYNC 4096X18 128QFP
标准包装: 72
系列: 72V
功能: 异步,同步
存储容量: 72K(4K x 18)
数据速率: 67MHz
访问时间: 15ns
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-TQFP(14x20)
包装: 托盘
其它名称: 72V845L15PFI
800-2343
IDT72V845L15PFI-ND
IDT72V805/72V815/72V825/72V835/72V845
3.3 V CMOS DUAL SyncFIFO 256 x 18, 512 x 18, 1,024 x 18, 4,096 x 18
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
11
FEBRUARY 11, 2009
WRITE EXPANSION OUT/HALF-FULL FLAG
(
WXOA/HFA, WXOB/HFB)
This is a dual-purpose output. In the Single Device and Width Expansion
mode, when Write Expansion In (
WXIA/WXIB) and/or Read Expansion In
(
RXIA/RXIB) are grounded, this output acts as an indication of a half-full
memory.
After half of the memory is filled, and at the LOW-to-HIGH transition of
the next write cycle, the Half-Full flag goes LOW and will remain set until
the difference between the write pointer and read pointer is less than or
equal to one half of the total memory of the device. The Half-Full flag (
HFA/
HFB) is then reset to HIGH by the LOW-to-HIGH transition of the Read
Clock (RCLK). The
HF is asynchronous.
In the Daisy Chain Depth Expansion mode,
WXI is connected to WXO
of the previous device. This output acts as a signal to the next device in
the Daisy Chain by providing a pulse when the previous device writes to
the last location of memory.
READ EXPANSION OUT (
RXOA/RXOB)
In the Daisy Chain Depth Expansion configuration, Read Expansion In
(
RXIA/RXIB) is connected to Read Expansion Out (RXOA/RXOB) of the
previous device. This output acts as a signal to the next device in the Daisy
Chain by providing a pulse when the previous device reads from the last
location of memory.
DATA OUTPUTS (Q0-Q17, QB0-QB17)
Q0-Q17 are data outputs for 18-bit wide data.
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IDT72V845L20PF8 功能描述:IC FIFO SYNC 4096X18 128QFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - FIFO 系列:72V 标准包装:90 系列:7200 功能:同步 存储容量:288K(16K x 18) 数据速率:100MHz 访问时间:10ns 电源电压:4.5 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:64-LQFP 供应商设备封装:64-TQFP(14x14) 包装:托盘 其它名称:72271LA10PF
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